Overview: Excitement builds as mushers approach the starting line of the Yukon Quest. Nobody seems deterred by the sunny -48 degrees temperatures. The teams leave at 3 minutes interval for the first checkpoint, Braeburn, located 100 miles from Whitehorse. The historic trail needs to be prepared before the race each year. Bob Daffe and a team from The Canadian Rangers Patrol Group are tasked with taming the dangers of the race route. We discover the strategies to breed the fastest dog teams.